Final answer:
A person with B+ blood can receive AB+ and B+ blood because their own blood does not produce antibodies against the B antigen or the Rh factor, allowing them to receive B antigens and positive Rh factor blood. They can also receive AB+ blood since they lack anti-A antibodies.
Step-by-step explanation:
Someone with B+ blood can receive AB+ and B+ blood because of the presence of the B antigen and the Rh factor on the surface of their red blood cells. Individuals with B+ blood do not produce antibodies against the B antigen or the Rh factor, which allows them to receive blood from donors with the same antigen (B) and Rh factor (positive). While they can receive B+ blood without any problems, they can also receive AB+ blood because AB+ individuals have both A and B antigens on their erythrocytes, and since B+ individuals do not create anti-A antibodies, they won't have an immune response against the A antigen present in AB+ blood.
The concept of a universal recipient applies to individuals with AB+ blood in the ABO blood group system who can receive a blood donation from people of any ABO blood type. Due to the presence of both A and B antigens on their erythrocytes, and the lack of anti-A or anti-B antibodies, AB+ individuals can receive a blood transfusion from any other blood type without an adverse immune reaction. It is important to note that while B+ individuals can accept AB+ and B+ blood, this compatibility does not extend to all blood types, as they cannot receive A+ or O+ blood due to the potential for an immune response to the unfamiliar A antigen or lack of antigen in O blood.